Microstructural examination of commercial ferritic alloys at 299 DPA

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Microstructures and density change measurements are reported for Martensitic commercial steels HT-9 and Modified 9Cr-lMo (T9) and oxide dispersion strengthened ferritic alloys MA956 and NU957 following irradiation in the FFTF/MOTA at 420{degrees}C to 200 DPA. Swelling as determined by density change remains below 2% for all conditions. Microstructures are found to be stable except in recrystallized grains of MA957, which are fabrication artifacts, with only minor swelling in the Martensitic steels and {alpha}{prime} precipitation in alloys with 12% or more chromium. These results further demonstrate the high swelling resistance and microstructural stability of the ferritic alloy class.

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16 p.

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Gelles, D. S. November 1, 1995.

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  • Pacific Northwest Laboratory
    Publisher Info: Pacific Northwest Lab., Richland, WA (United States)
    Place of Publication: Richland, Washington

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Microstructures and density change measurements are reported for Martensitic commercial steels HT-9 and Modified 9Cr-lMo (T9) and oxide dispersion strengthened ferritic alloys MA956 and NU957 following irradiation in the FFTF/MOTA at 420{degrees}C to 200 DPA. Swelling as determined by density change remains below 2% for all conditions. Microstructures are found to be stable except in recrystallized grains of MA957, which are fabrication artifacts, with only minor swelling in the Martensitic steels and {alpha}{prime} precipitation in alloys with 12% or more chromium. These results further demonstrate the high swelling resistance and microstructural stability of the ferritic alloy class.

Physical Description

16 p.

Notes

INIS; OSTI as DE96002633

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  • ICFRM-7: international conference on fusion reactor materials, Obninsk (Russian Federation), 25-29 Sep 1995

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  • Other: DE96002633
  • Report No.: PNL-SA--24375
  • Report No.: CONF-950961--3
  • Grant Number: AC06-76RL01830
  • Office of Scientific & Technical Information Report Number: 135544
  • Archival Resource Key: ark:/67531/metadc621642

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Office of Scientific & Technical Information Technical Reports

Reports, articles and other documents harvested from the Office of Scientific and Technical Information.

Office of Scientific and Technical Information (OSTI) is the Department of Energy (DOE) office that collects, preserves, and disseminates DOE-sponsored research and development (R&D) results that are the outcomes of R&D projects or other funded activities at DOE labs and facilities nationwide and grantees at universities and other institutions.

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  • November 1, 1995

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  • June 16, 2015, 7:43 a.m.

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  • April 7, 2016, 4:43 p.m.

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Gelles, D. S. Microstructural examination of commercial ferritic alloys at 299 DPA, article, November 1, 1995; Richland, Washington. (digital.library.unt.edu/ark:/67531/metadc621642/: accessed October 20, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.